William p



No. 66,250 PATENTED JULY 2, 1867.

.W. F. PATTER SON.

EXPANDING REAMBR. Y

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TO ALL WHQM IT MAY QORGERN: Y

tislly as and for the purpose set forth.

WILLIAM F. rsrrnnson, 0F GHARLESTOWN, MASSACHUSETTS.

mm PM No. 66,250, n w July 2, 1867.

IHIPROYBD EXPANDIITG REAMBB.

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' Be it known that I, WILLIAM EPsnnnsms, of the city of Chnrleston-n, n the county of Middlesex,.sn d State of Missnehnsettnhav invented I- new tool for enlarging, smoothing; and truing holes in metals, designoted an Expensive Renmer; end I do hereby-declare that the following is; n full, clear, and exact description of the construction and operation of the some, reference heingwhul. to the annexed drawings, and 'to the letters of reference msrked thereon, making a-psrt of this specification, f

A represents a shell or hollow body ofi metnl, nt one end of which is inserted a nut, and at the opposite and is'arrnnged one or more slots or receptncles for the cutters, also a cap for retainingthe cutters in'position. B represents n piston, arranged with escrow fitted to the nut in the shell A, also arranged with one or more bevels, conforming to the cutters G O C for: extending the radius of the cutters. G 'C 0 represent one, or more inure-hie cutters, arrange! to conform to the formation of the spring D D and piston B, and open ted by the ingress and egress motion of thepiston. D D represent one or more springs, for the purpose of retaining the cutters in position to the piston. E represents lcheobnnt, fitted to the screw on the piston for the purpose of retaining the piston in s fixedposition while operstiug the reemer.

What I' elnim as my invention, and desire to secure by Letters Patent; is-

The comhinstion of the shell A, piston B, cutters C. and springs D, all constructed and arranged substan- WILIIIAM. F. PATTERSON.

Witnesses:

Enesn F. Sang, 

